Comments

From: Hermann Lauer <Hermann.Lauer@iwr.uni-heidelberg.de>
Date: Fri, 24 Oct 2008 17:24:33 +0200
> Hello all,> > On Mon, Sep 29, 2008 at 10:19:54AM +0200, Hermann Lauer wrote:> > > while trying to run vanilla linux-2.6.26.5 or the debian etchnhalf kernel> > > (2.6.24.x) I noticed the cassini network driver for the builtin gigabit> > > network is unstable and brings the kernel down on a dualprocessor sparc> > > SunFire 480R with a Hardware FATAL RESET.> > > > I now noticed that even a few pings are possible with the cassini> > network driver if you configure it statically, but then the machine again > > crashes with the known: > > ERROR: System Hardware FATAL RESET from CPU0 CPU2> > tried 2.6.27.2 today, but this hangs already at loading the kernel.> Output is attached. Please tell me what else I can provide.
Unfortunately, "-p" doesn't do anything any more and the kernel
is stopping or crashing during the part of the boot between
when the early prom console is disabled and the real console is
setup.
The way to debug this is to manually get rid of the CON_BOOT flag
in the early prom console structure, like the following patch.
If you reboot with this it will print more information so we can
try and diagnose this further.
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From: Hermann Lauer <Hermann.Lauer@iwr.uni-heidelberg.de>
Date: Fri, 19 Dec 2008 09:56:22 +0100
> On Wed, Dec 17, 2008 at 07:46:46PM -0800, David Miller wrote:> > > tried 2.6.27.2 today, but this hangs already at loading the kernel.> > > Output is attached. Please tell me what else I can provide.> > > > Unfortunately, "-p" doesn't do anything any more and the kernel> > is stopping or crashing during the part of the boot between> > when the early prom console is disabled and the real console is> > setup.> > > > The way to debug this is to manually get rid of the CON_BOOT flag> > in the early prom console structure, like the following patch.> > Applied your patch to the 2.6.27.9 vanilla source and booted,> console output up to the hang is below. Just to remember:> 2.6.26.5 did not hang.
...
> [ 50.390759] CPU 0: synchronized TICK with master CPU (last diff 0 cycles, maxerr 11 cycles)> [ 50.390776] Brought up 2 CPUs> [ 50.391634] net_namespace: 1552 bytes> [ 50.568542] NET: Registered protocol family 16>
The next thing that probably should run is the PCI controller
probe. But I can't say that for certain, so we need more
info.
Please reboot this test kernel with the following added boot
command line options: initcall_debug=1 ignore_loglevel
Let us see the console log output that generates.
Thanks!
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